Four more cases of measles have been identified in Adams and Weld counties. The state health department and both counties’ health agencies confirmed that all four people were unvaccinated and all are tied to Broomfield High School or Broomfield Heights Middle School.
The Colorado Department of Public Health and Environment says measles is a highly contagious, but preventable disease. Getting the measles, mumps, and rubella, or MMR, vaccine is the best way to protect yourself, your family, and your community.
The new case is the state's eighth this year, giving Colorado a bad start when it comes to measles for 2026. It recorded 36 cases last year, which was the most the state had seen in years, as measles spread widely nationally. In March last year, Colorado had two confirmed measles cases, and it was May before the state logged eight.
“I think there's two messages,” said Dr. Ned Calonge, the state health department's chief medical officer. “If you or your children are not vaccinated, you really need to think about keeping them from areas where they could be exposed. Measles is highly infectious. It's also a great time to get vaccinated. Measles is a safe and effective vaccine. It's readily available.”
If you have not had the MMR vaccine, you can still get it within 72 hours of exposure to help prevent illness.
Anyone who was in the locations at the listed dates and times may have been exposed. If symptoms develop, call the state health department at 720-653-3369 or your local public health agency right away. Call your health care provider, urgent care, or emergency department before going in, and tell them you may have been exposed to measles. This helps prevent further spread.
Measles symptoms generally begin with fever, cough, runny nose, and red eyes, followed by a rash that usually starts on the face and spreads.
For more information
Visit the CDPHE measles webpage, which includes information about symptoms, transmission, and vaccine recommendations, 2026 Colorado measles case information, and a current list of exposure locations.
- A third unvaccinated child tied to Broomfield High gets measles, prompting public health official to declare an outbreak
- Unvaccinated students, staff at Broomfield High School sent home for 21 days to prevent measles outbreak
- State health officials warn Broomfield High School students and staff might have been exposed to measles
